CANOY JR., SERGIO R.; EBALLE, ROLITO G. Convex hulls of subsets in the join, composition and cartesian product of graphs. Utilitas Mathematica , [S. l.], v. 70, 2006. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/417. Acesso em: 8 may. 2026.